Conceptual Physics C2009 Guided Reading & Study Workbook Se
9th Edition
ISBN: 9780133647396
Author: Prentice Hall
Publisher: Prentice Hall
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Textbook Question
Chapter 24, Problem 40A
Will the efficiency of a car engine increase, decrease; or remain the same if the muffler is removed? If the car is driven on a very cold day? Defend your answers.
Expert Solution & Answer
To determine
To explain: The efficiency of a car engine when muffler is removed and the car is driven on a very cold day.
Explanation of Solution
Introduction:
Efficiency is a term which is used to define the performance of the system. A system is called is more efficient when you receive maximum work and less waste.
When you remove the muffler from the engine of the car then the back pressure of the car will reduce and hence the car will give you maximum work. So, the efficiency of the car will increase. In the case of very cold day, the efficiency of the car will increase and the reason for this is the temperature difference between the surrounding and the hot reservoir.
Conclusion:
Hence, the efficiency of a car engine when muffler is removed will increase and in a very cold day the efficiency of car will also increase.
Chapter 24 Solutions
Conceptual Physics C2009 Guided Reading & Study Workbook Se
Ch. 24 - What is the meaning of the Greek words from which...Ch. 24 - Is the study of thermodynamics concerned primarily...Ch. 24 - What is the lowest possible temperature on the...Ch. 24 - What is the temperature of melting ice in kelvins?...Ch. 24 - How does the law of the conservation of energy...Ch. 24 - What happens to the internal energy of a system...Ch. 24 - Prob. 7ACh. 24 - Prob. 8ACh. 24 - Prob. 9ACh. 24 - What happens to the temperature of air when it is...
Ch. 24 - What generally happens to the temperature of...Ch. 24 - What generally happens to the temperature of...Ch. 24 - How does the second law of thermodynamics relate...Ch. 24 - What three processes occur in every heat engine?Ch. 24 - What is thermal pollution?Ch. 24 - If all friction could be removed from a heat...Ch. 24 - What is the ideal efficiency of a heat engine that...Ch. 24 - Why are heat engines intentionally run at high...Ch. 24 - Give at least two examples to distinguish between...Ch. 24 - How much of the electrical energy transformed by a...Ch. 24 - With respect to orderly and disorderly states,...Ch. 24 - What is the physicists term for a measure of...Ch. 24 - Under what condition can entropy decrease in a...Ch. 24 - What is the relationship between the second law of...Ch. 24 - Prob. 25ACh. 24 - Calculate the ideal efficiency of a heat engine...Ch. 24 - Calculate the ideal efficiency of a ships boiler...Ch. 24 - Calculate the ideal efficiency of a steam turbine...Ch. 24 - In a heat engine driven by ocean temperature...Ch. 24 - On which temperature scale does the average...Ch. 24 - Prob. 31ACh. 24 - Prob. 32ACh. 24 - Maria vigorously shakes a can of liquid back and...Ch. 24 - When you pump a tire with a bicycle pump, the...Ch. 24 - What happens to the gas pressure within a sealed...Ch. 24 - We know that warm air rises. So it might seem that...Ch. 24 - The combined molecular kinetic energies of...Ch. 24 - Prob. 38ACh. 24 - Prob. 39ACh. 24 - Will the efficiency of a car engine increase,...Ch. 24 - Consider the inverted soft drink can placed in a...Ch. 24 - A mixture of fuel and air is burned rapidly in a...Ch. 24 - In buildings that are being heated electrically,...Ch. 24 - Why is thermal pollution' a relative term?Ch. 24 - Is it possible to construct a heat engine that...Ch. 24 - What happens to the efficiency of a heat engine...Ch. 24 - Water put into a freezer compartment in your...Ch. 24 - Carlos says that perpetual motion machines are...Ch. 24 - Helium has the special property that its internal...Ch. 24 - Imagine a giant dry-cleaners bag full of air at a...Ch. 24 - What is the ideal efficiency of an automobile...Ch. 24 - Prob. 52ACh. 24 - Which heat engine has greater ideal efficiency,...Ch. 24 - To increase the efficiency of a heat engine, would...Ch. 24 - A heat engine takes in 100 kJ of energy from a...Ch. 24 - A certain heat engine takes in 25 kJ of heat and...Ch. 24 - During one cycle, an ideal heat engine exhausts...Ch. 24 - A heat engine operates between Thot=750C and...Ch. 24 - Prob. 59A
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